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Classifier-free guidance (CFG) succeeds in condition diffusion models that use a guidance scale to balance the influence of conditional and unconditional terms. A high guidance scale is used to enhance the performance of the conditional…

计算机视觉与模式识别 · 计算机科学 2025-06-27 Kaiyu Song , Hanjiang Lai

Classifier-free Guidance (CFG) is a widely used technique in modern diffusion models for enhancing sample quality and prompt adherence. However, through an empirical analysis on Gaussian mixture modeling with a closed-form solution, we…

计算机视觉与模式识别 · 计算机科学 2026-03-05 Chubin Chen , Jiashu Zhu , Xiaokun Feng , Nisha Huang , Chen Zhu , Meiqi Wu , Fangyuan Mao , Jiahong Wu , Xiangxiang Chu , Xiu Li

Classifier-free guidance has become a staple for conditional generation with denoising diffusion models. However, a comprehensive understanding of classifier-free guidance is still missing. In this work, we carry out an empirical study to…

计算机视觉与模式识别 · 计算机科学 2025-11-25 Xiaoming Zhao , Alexander G. Schwing

Classifier-free guidance (CFG) is widely used in diffusion models but often introduces over-contrast and over-saturation artifacts at higher guidance strengths. We present EP-CFG (Energy-Preserving Classifier-Free Guidance), which addresses…

计算机视觉与模式识别 · 计算机科学 2024-12-16 Kai Zhang , Fujun Luan , Sai Bi , Jianming Zhang

Various weather modelling problems (e.g., weather forecasting, optimizing turbine placements, etc.) require ample access to high-resolution, highly accurate wind data. Acquiring such high-resolution wind data, however, remains a challenging…

As Classifier-Free Guidance (CFG) has proven effective in conditional diffusion model sampling for improved condition alignment, many applications use a negated CFG term to filter out unwanted features from samples. However, simply negating…

机器学习 · 计算机科学 2024-11-27 Jinho Chang , Hyungjin Chung , Jong Chul Ye

Autoregressive (AR) models have emerged as powerful tools for image generation by modeling images as sequences of discrete tokens. While Classifier-Free Guidance (CFG) has been adopted to improve conditional generation, its application in…

计算机视觉与模式识别 · 计算机科学 2025-10-03 Dongli Xu , Aleksei Tiulpin , Matthew B. Blaschko

Classifier-free guidance (CFG) has helped diffusion models achieve great conditional generation in various fields. Recently, more diffusion guidance methods have emerged with improved generation quality and human preference. However, can…

计算机视觉与模式识别 · 计算机科学 2026-02-27 Dian Xie , Shitong Shao , Lichen Bai , Zikai Zhou , Bojun Cheng , Shuo Yang , Jun Wu , Zeke Xie

Denoising diffusion models excel at generating high-quality images conditioned on text prompts, yet their effectiveness heavily relies on careful guidance during the sampling process. Classifier-Free Guidance (CFG) provides a widely used…

图形学 · 计算机科学 2026-03-04 Shai Yehezkel , Omer Dahary , Andrey Voynov , Daniel Cohen-Or

Conditional diffusion probabilistic models can model the distribution of natural images and can generate diverse and realistic samples based on given conditions. However, oftentimes their results can be unrealistic with observable color…

计算机视觉与模式识别 · 计算机科学 2022-12-15 Kangfu Mei , Nithin Gopalakrishnan Nair , Vishal M. Patel

Diffusion models excel in generating high-quality images. However, current diffusion models struggle to produce reliable images without guidance methods, such as classifier-free guidance (CFG). Are guidance methods truly necessary?…

计算机视觉与模式识别 · 计算机科学 2024-12-06 Donghoon Ahn , Jiwon Kang , Sanghyun Lee , Jaewon Min , Minjae Kim , Wooseok Jang , Hyoungwon Cho , Sayak Paul , SeonHwa Kim , Eunju Cha , Kyong Hwan Jin , Seungryong Kim

In recent years, diffusion models have gained popularity for their ability to generate higher-quality images in comparison to GAN models. However, like any other large generative models, these models require a huge amount of data,…

计算机视觉与模式识别 · 计算机科学 2023-12-21 Rajesh Shrestha , Bowen Xie

Classifier-Free Guidance (CFG) is a critical technique for enhancing the sample quality of visual generative models. However, in autoregressive (AR) multi-modal generation, CFG introduces design inconsistencies between language and visual…

计算机视觉与模式识别 · 计算机科学 2024-10-15 Huayu Chen , Hang Su , Peize Sun , Jun Zhu

Classifier-free guidance (CFG) has emerged as a pivotal advancement in text-to-image latent diffusion models, establishing itself as a cornerstone technique for achieving high-quality image synthesis. However, under high guidance weights,…

机器学习 · 计算机科学 2025-06-26 Cheng Jin , Zhenyu Xiao , Chutao Liu , Yuantao Gu

Classifier-free guidance (CFG) is a cornerstone of text-to-image diffusion models, yet its effectiveness is limited by the use of static guidance scales. This "one-size-fits-all" approach fails to adapt to the diverse requirements of…

Classifier-free guidance (CFG) is a widely used technique for controllable generation in diffusion and flow-based models. Despite its empirical success, CFG relies on a heuristic linear extrapolation that is often sensitive to the guidance…

计算机视觉与模式识别 · 计算机科学 2026-05-14 Jian-Feng Cai , Haixia Liu , Zhengyi Su , Chao Wang

It is widely believed that noise conditioning is indispensable for denoising diffusion models to work successfully. This work challenges this belief. Motivated by research on blind image denoising, we investigate a variety of…

计算机视觉与模式识别 · 计算机科学 2025-11-19 Qiao Sun , Zhicheng Jiang , Hanhong Zhao , Kaiming He

Text-to-image diffusion models are capable of generating high-quality images, but suboptimal pre-trained text representations often result in these images failing to align closely with the given text prompts. Classifier-free guidance (CFG)…

计算机视觉与模式识别 · 计算机科学 2025-11-25 Zhenyu Zhou , Defang Chen , Can Wang , Chun Chen , Siwei Lyu

Conditional image generation has paved the way for several breakthroughs in image editing, generating stock photos and 3-D object generation. This continues to be a significant area of interest with the rise of new state-of-the-art methods…

计算机视觉与模式识别 · 计算机科学 2022-05-10 Vedant Singh , Surgan Jandial , Ayush Chopra , Siddharth Ramesh , Balaji Krishnamurthy , Vineeth N. Balasubramanian

Classifier-free guidance (CFG) has become a widely adopted and practical approach for enhancing generation quality and improving condition alignment. Recent studies have explored guidance mechanisms for unconditional generation, yet these…

计算机视觉与模式识别 · 计算机科学 2025-12-01 Chaoyang Wang , Tianmeng Yang , Jingdong Wang , Yunhai Tong